DS2182A

DS2182A T1 Line Monitor www.dalsemi.com FEATURES § § Performs framing and monitoring functions Supports Superframe and Extended Superframe formats Four onboard error counters – 16-bit bipolar violation – 8-bit CRC – 8-bit OOF – 8-bit frame bit error Indication of the following – yellow and blue alarms – incoming B8ZS code words – 8 and 16 zero strings – change of frame alignment – loss of sync – carrier loss Simple serial interface used for configuration, control and status monitoring Burst mode allows quick access to counters for status updates Automatic counter reset feature Single 5V supply; low-power CMOS technology Available in 28-pin DIP and 28-pin PLCC The DS2182A is upward-compatible from the original DS2182 The updated DS2182A includes the following changes from the original DS2182: § Ability to count excessive zeros § Severely Errored Framing Event indication § Updated AIS detection § Updated RCL detection § AIS and RCL alarm clear indications § PIN ASSIGNMENT INT SDI SDO CS SCLK NC RYEL RLINK RLCLK RCLK RCHCLK RSER NC VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VDD RLOS RFER RBV RCL RNEG RPOS RST TEST RSIGSEL RSIGFR RABCD RMSYNC RFSYNC § § § § § § 28-Pin DIP (600-mil) DESCRIPTION The DS2182A T1 Line Monitor Chip is a monolithic CMOS device designed to monitor real-time performance on T1 lines. The DS2182A frames to the data on the line, counts errors, and supplies detailed information about the status and condition of the l...